2pcs Heavy Duty Soundbar Mount Bracket Strong for Mounting Above or Under TVs

The Soundbar mount was designed to mount directly to the back of a TV and can be used when the TV is placed on furniture or when the TV is wall mounted. When it is used with a wall mounted TV, the Soundbar moves with the pan, swivel, extend, or tilt functions of the TV mount to improve sound quality, and esthetics.

eBay